Improvement in mowing-machines



M. G. HUBBARD. Mower. No. 44.628. I Patented Oct. 11,1864.

UNITED STATES PATENT OFFICE.

M. G. HUBBARD, or sirRAoUsE, NEW YORK.

IMPROVEMENT IN MOWING-MACHINES.

Specification forming part of Letters Patent No. 414,628, dated October11,1864.

To all whom it may concern:

Be it known that I, MOSES G. HUBBARD, of the city of Syracuse, in theState of New York, have invented certain new and useful Improvements inMowing-Machines; and I do hereby declare the following to be a tull andclear description thereof, reference being bad to the accompanyingdrawings, in which- Figure 1 represents a perspective elevation of mywhole mowing-machine,in order to show the relative position of thespecific parts which i have improved and'desireto secure in this patent.I

Fig. 2 is a detached view of a part of my .nachines, known by the nameof the cornerplate, and connects and secures the corner formed by thesurface-spring G and the extension B, and also forms one'halt' of thehinge by which the cutting apparatus is connected to the machine. I havegenerally heretofore made this corner-plate straight, so as to.

require that the pitman E should be curved over it, and thus sufferedthe serious incon venien'ce of a crooked pitman, which has been thecause of many accidents and breakagcs in my machines. I at one timetried to remedy this defect by curving the corner-plate downsufficiently to permit the use of a straight pitman; but the curvenecessarily came so nearv the ground as to interfere with cut'grass,

and it alsoprevented the withdrawal of the cutter-bar without firstentirely disconnecting the cutting. apparatus. These were such seriousobstacles and inconveniences that most of mybuilders preferred to usethe straight corner-plate and crooked pitman; but I have finally soarranged this corner-plate bycurving it up, as shown at D, as to permitthe use of a straight pitman, 13, passing under the said curve D, andwhich entirely avoids the diflicnlties heretofore experienced inconstructing this part of my machines.

hand end of the extension B by merely forming an eye on the end of theextension-bar; but the action of the spring-bar (J in the verticalmovements of the cutting apparatus requires so much rolling motion ofthis extension-iron as to render a very loose joint necessary at itsleft-hand end, and this joint, when left loose, very soon begins to wearvery seriously. in order to avoid these difficulties I have found thatby forming the said eye on the end of the extension-iron by means of ahead screwed onto the QXTBIJSlOn-ll0ll,2t8 shown at G, Fig. l, the mostperfect vertical freedom of the cutting apparatus is permitted, becausethe extension can roll in the head, and at the same time aperfectly-fitting joint can be made I and greater durability therebyattained.

' Having thus fully described my improvementsin mowing-machines, what Iclaim therein as new, and desire to secure by Letters Patent, is-- Thecurve D in the corner-plate, suhstantially ,as and for the purpose setforth.

M. G. HUBBARD.

Witnesses: p

A. AuCARPEN'rER, 0. J. LYSTER.

I have also heretofore generally made the hinge at left-

